import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: atp
 * Date: 2022-10-07
 * Time: 10:57
 */
public class Test {

    public static int add(int a) {

    }
    public static void main(String[] args) {

    }

   // 递归求 N 的阶乘
//    public static int func(int n) {
//        if(n == 1) {
//            return 1;
//        } else {
//            return n * func(n - 1);
//        }
//    }
//    public static void main(String[] args) {
//        Scanner scanner = new Scanner(System.in);
//        int scan = scanner.nextInt();
//        System.out.println(func(scan));
//    }

}
